package com.zsc.shixun.controller;

import cn.hutool.json.JSONUtil;
import com.zsc.shixun.config.ApplicationHelper;
import com.zsc.shixun.model.message.MessageVo;
import com.zsc.shixun.model.message.ServerEncoder;
import com.zsc.shixun.service.IMessageService;
import com.zsc.shixun.service.impl.MessageServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.websocket.*;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.concurrent.CopyOnWriteArraySet;

/**
 * <p>
 *
 * </p>
 *
 * @author ZWYZY
 * @since 2021/4/16
 */

@Slf4j
@ServerEndpoint(value = "/websocket/{userid}",encoders = { ServerEncoder.class })
//@ServerEndpoint(value = "/websocket")
@Component
public class WebSocketServer {
    @Autowired
    IMessageService messageService=(IMessageService)  ApplicationHelper.getBean("messageService");
    //静态变量，用来记录当前在线连接数。应该把它设计成线程安全的。
    private static int onlineCount = 0;
    //concurrent包的线程安全Set，用来存放每个客户端对应的MyWebSocket对象。
    private static CopyOnWriteArraySet<WebSocketServer> webSocketSet = new CopyOnWriteArraySet<WebSocketServer>();

    //与某个客户端的连接会话，需要通过它来给客户端发送数据
    private Session session;
    private String userId;

    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        this.userId = userId;
    }

    /**
     * 连接建立成功调用的方法
     */
    @OnOpen
    public void onOpen(Session session, @PathParam("userid")String userId) {
        log.info("用户：{}上线",userId);
        this.userId=userId;
        this.session = session;
        webSocketSet.add(this);     //加入set中
        addOnlineCount();           //在线数加1
        log.info("有新连接加入！当前在线人数为" + getOnlineCount());
//        try {
//            sendMessage("连接成功");
//        } catch (IOException e) {
//            log.error("websocket IO异常");
//        }
    }
    //	//连接打开时执行
    //	@OnOpen
    //	public void onOpen(@PathParam("user") String user, Session session) {
    //		currentUser = user;
    //		System.out.println("Connected ... " + session.getId());
    //	}

    /**
     * 连接关闭调用的方法
     */
    @OnClose
    public void onClose() {
        webSocketSet.remove(this);  //从set中删除
        subOnlineCount();           //在线数减1
        log.info("有一连接关闭！当前在线人数为" + getOnlineCount());
    }

    /**
     * 收到客户端消息后调用的方法
     *
     * @param message 客户端发送过来的消息
     */
//    @OnMessage
    public void onMessage(String message, Session session) {
        log.info("来自客户端的消息:" + message);
        log.info("sessionId:{}",session.getId());
        //群发消息
        for (WebSocketServer item : webSocketSet) {
            try {
                item.sendMessage(message);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    @OnMessage
    public void updateMessageById(String message, Session session) {
        log.info("来自客户端的消息:" + message);


        messageService.updateDeleteById(Long.parseLong(message));
//        log.info("sessionId:{}",session.getId());
        //群发消息
//        for (WebSocketServer item : webSocketSet) {
//            try {
//                item.sendMessage(message);
//            } catch (IOException e) {
//                e.printStackTrace();
//            }
//        }

    }

    /**
     * @param session
     * @param error
     */
    @OnError
    public void onError(Session session, Throwable error) {
        log.error("发生错误");
        error.printStackTrace();
    }


    public void sendMessage(String message) throws IOException {
        this.session.getBasicRemote().sendText(message);

    }

    public void sendMessageObj(MessageVo o) throws IOException{

            this.session.getBasicRemote().sendText(JSONUtil.toJsonStr(o));

    }

    /**
     * 群发自定义消息
     */
    public static void sendInfo(String message) throws IOException {
        log.info(message);
        for (WebSocketServer item : webSocketSet) {
            try {
                item.sendMessage(message);
            } catch (IOException e) {
                continue;
            }
        }
    }
    /**
     * 群发自定义消息
     */
    public static void sendObj(MessageVo message) throws IOException {
//        log.info(messag);
        for (WebSocketServer item : webSocketSet) {
            try {
                item.sendMessageObj(message);
            } catch (IOException e) {
                continue;
            }
        }
    }
    public static void sendInfoToUser(String message,Long id)throws IOException{
        log.info("消息已发送给用户:{}",id);
        for (WebSocketServer item : webSocketSet) {
            try {
                if(item.getUserId().equals(id.toString()))
                {
                    item.sendMessage(message);

                }
            } catch (IOException e) {
                continue;
            }
        }
    }
    public static void sendObjToUser(MessageVo obj, Long id)throws IOException{
        log.info("消息已发送给用户:{}",id);
        for (WebSocketServer item : webSocketSet) {
            try {
                if(item.getUserId().equals(id.toString()))
                {
                    item.sendMessageObj(obj);

                }
            } catch (IOException e) {
                continue;
            }
        }
    }
    public static synchronized int getOnlineCount() {
        return onlineCount;
    }

    public static synchronized void addOnlineCount() {
        WebSocketServer.onlineCount++;
    }

    public static synchronized void subOnlineCount() {
        WebSocketServer.onlineCount--;
    }

    private class MessageService {
    }
}


